Function _change_singleton_option

tests/test_subclass_options.py:294–306

(
    option: Literal["hook", "policy"],
    lock_path: str,
    hook: Callable[[int], None],
)

def _change_singleton_option(
    option: Literal["hook", "policy"],
    lock_path: str,
    hook: Callable[[int], None],
) -> BaseFileLock:
    if option == "hook":
        return _ForwardingFileLock(lock_path, is_singleton=True, on_acquired=list[int]().append)
    return _ForwardingFileLock(
        lock_path,
        is_singleton=True,
        context_error_policy="group",
        on_acquired=hook,
    )


def _dynamic_constructor() -> type[BaseFileLock]: